Watch the first X-Men: Days of Future Past Trailer

The first X-Men: Days of Future Past trailer is finally here.

And it's a doozy, with a host of old and even older faces combining for the first time on-screen.

The plot, which finds the First Class gang bumping headlong into the more 'classic' X-Men-ers of Bryan Singer's classic run is full of fanboy-adrenalising moments.

But enough waffling - watch the trailer below and let us know what you think in the comments below!

Oh, and when you've watched it, make sure to check out our trailer breakdown, where we raise .